// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "net/cert/signed_tree_head.h"

#include <string.h>

#include <ostream>

#include "base/strings/string_number_conversions.h"

namespace net {
namespace ct {

    SignedTreeHead::SignedTreeHead() { }

    SignedTreeHead::SignedTreeHead(Version version,
        const base::Time& timestamp,
        uint64_t tree_size,
        const char sha256_root_hash[kSthRootHashLength],
        const DigitallySigned& signature,
        const std::string& log_id)
        : version(version)
        , timestamp(timestamp)
        , tree_size(tree_size)
        , signature(signature)
        , log_id(log_id)
    {
        memcpy(this->sha256_root_hash, sha256_root_hash, kSthRootHashLength);
    }

    SignedTreeHead::SignedTreeHead(const SignedTreeHead& other) = default;

    SignedTreeHead::~SignedTreeHead() { }

    void PrintTo(const SignedTreeHead& sth, std::ostream* os)
    {
        (*os) << "{\n"
              << "\t\"version\": " << sth.version << ",\n"
              << "\t\"timestamp\": " << sth.timestamp << ",\n"
              << "\t\"tree_size\": " << sth.tree_size << ",\n"
              << "\t\"sha256_root_hash\": \""
              << base::HexEncode(sth.sha256_root_hash, kSthRootHashLength)
              << "\",\n\t\"log_id\": \""
              << base::HexEncode(sth.log_id.data(), sth.log_id.size()) << "\"\n"
              << "}";
    }

    bool operator==(const SignedTreeHead& lhs, const SignedTreeHead& rhs)
    {
        return std::tie(lhs.version, lhs.timestamp, lhs.tree_size, lhs.log_id) == std::tie(rhs.version, rhs.timestamp, rhs.tree_size, rhs.log_id) && memcmp(lhs.sha256_root_hash, rhs.sha256_root_hash, kSthRootHashLength) == 0 && lhs.signature.SignatureParametersMatch(rhs.signature.hash_algorithm, rhs.signature.signature_algorithm) && lhs.signature.signature_data == rhs.signature.signature_data;
    }

    bool operator!=(const SignedTreeHead& lhs, const SignedTreeHead& rhs)
    {
        return !(lhs == rhs);
    }

} // namespace ct
} // namespace net
